Tally Dascom 1125
52
USB Interface
The USB interface conforms to the Universal Serial Bus 2.0 Specifications. It supports the Full Speed mode at
12 Mbps. It uses the “B” type USB connector.
Serial Interface
Serial RS-232C Interface Pin Assignment
Pin Signal Symbol Signal Name Signal
Transmission
1 CG Chassis Ground —
2 TXD Send Data OUT
3 RXD Receive Data IN
4 RTS Request to Send OUT
7 SG Signal Ground —
20 DTR Data Terminal Ready OUT
25 +5V Power —
Serial RS-232 Connector Diagram
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